Product family
Return-Line Filters
Tank-top return filters that return filtered oil to the reservoir. RFA, RFB and LXZS housings with bypass valve, diffuser and clogging indicator,…
23 models
Hydraulic · Water · Air filtration
Filtration parts engineered to keep industrial systems clean.
Xinxiang Haijie Machinery manufactures return-line, suction and pressure filter elements plus stainless-steel housings — β-rated media, model-for-model interchange, and OEM production from your drawing or sample.
RFA / RFB return-line filters
Melt-blown media
Pleated glass fibre
Stainless mesh
Product families
Four families cover most hydraulic circuits
Every series shares the same design logic: correct β-ratio media, a housing-matched envelope and a traceable model number.
Product family
Return-Line Filter Elements
Replacement return-line elements for tank-top filters: pleated glass fibre, paper or stainless mesh, β ≥ 100, 1 to 25 µm, −30 to…
23 models
Product family
Suction Oil Filters
Pump-inlet suction filters that protect hydraulic pumps from coarse debris — 16 to 1000 L/min at 0.6 MPa, with self-sealing and bypass…
9 models
Product family
Suction Filter Elements
Replacement suction strainer elements, 80 to 180 µm, for hydraulic power units, machine tools and mining equipment. WU and TFX ranges.
18 models
Swimming Pool Filter Cartridges
Pleated polyester pool and SPA cartridges, OD 65 to 114 mm, lengths 5" to 40", filtration 1 to 50 µm, maximum working pressure 4.0…
1 modelOil filtration
Return-line, suction and pipeline filters for hydraulic power units, injection moulding machines, mining supports and wind-turbine gearboxes — 0.6 to 31.5 MPa, down to 1 µm.
Water filtration
Melt-blown and pleated cartridges for RO pre-treatment, cooling water and swimming pools — 70–100 m³/h rated flow per cartridge, 0.35 to 150 µm.
Air & gas filtration
Compressor air/oil/air-oil separation elements and coalescing filters from 100 µm down to 0.01 µm, for screw compressors, blowers and clean-room air.
Selected models
Ready to ship from stock tooling
Popular sizes across the return-line and suction families. Any model can be quoted with alternative media or filtration ratings.
RFA series
RFA-100 Return-Line Filter
RFA tank-top return filter RFA-100. Housing with bypass valve, diffuser and clogging indicator; element in glass fibre, paper or stainless mesh.
RFA-100
RFA series
RFA-630 Return-Line Filter
RFA tank-top return filter RFA-630. Housing with bypass valve, diffuser and clogging indicator; element in glass fibre, paper or stainless mesh.
RFA-630
RFB series
RFB-250 Return-Line Filter
RFB tank-top return filter RFB-250. Housing with bypass valve, diffuser and clogging indicator; element in glass fibre, paper or stainless mesh.
RFB-250
RFA series
RFA-40 Return-Line Filter
RFA tank-top return filter RFA-40. Housing with bypass valve, diffuser and clogging indicator; element in glass fibre, paper or stainless mesh.
RFA-40
TF series
TF-160 Suction Oil Filter
TF pump-inlet suction filter TF-160. 0.6 MPa, 80–180 µm, self-sealing and bypass valves so the tank is not drained for a change.
TF-160
FAX series
FAX-100 Return-Line Filter Element
Replacement return-line element FAX-100 for FAX housings — pleated glass fibre, paper or stainless mesh, 1–25 µm, β ≥ 100.
FAX-100
WU series
WU-100 Suction Filter Element
Replacement suction strainer WU-100 for WU housings — 80–180 µm coarse protection at the pump inlet.
WU-100
FBX series
FBX-250 Return-Line Filter Element
Replacement return-line element FBX-250 for FBX housings — pleated glass fibre, paper or stainless mesh, 1–25 µm, β ≥ 100.
FBX-250
Interchange programme
One part number is all we need
Send the competitor reference — HYDAC, Rexroth, Pall, Eaton, Mahle, MP-Filtri, Parker or Liming — and our engineers return a drop-in element with the same envelope and equal or better β-efficiency.
- Part number or drawingA photo of the label is enough to start.
- Selection within one business dayMedia, β-rating, seals and end-cap geometry confirmed in writing.
- Sample, then batchFit test on one element before volume production.
| Platform | Example reference | Rating |
|---|---|---|
| HYDAC / Rexroth | 1300R005BN4HC / -B4-KZ50 | 1300 L/min · 10 bar · 1–50 µm |
| Pall | HC9900FKS30H / HC9600 | 2600 L/min · 16 bar · 0.5–10 µm |
| Eaton | 01.NR9600 / BFE.30 | 500–1300 L/min · 10 bar |
| Mahle | HS13000E09W1.0 / PI8 | 1300–2600 L/min · 16 bar |
| Dongfang turbine | FD708-602000A014 | 2600 L/min · 15 bar · 10 µm |
| Gearbox breather | DC-2 / DC-3 / SGB-90-03-B | Moisture & particle ingress |
References are shown only to describe interchangeability. HAIJIE is not affiliated with, appointed by or endorsed by these manufacturers.
Inside the plant
Pleating, welding, assembly and inspection under one roof
Media is processed and pleated in-house, packed into end caps, welded and pressure-tested before packing — which is why a replacement element can be matched to your existing housing instead of the other way round.
- Incoming media controlPermeability, resin content and thickness checked on receipt.
- Bubble-point & collapse testElement integrity verified before it leaves the line.
- 100 % appearance & leak checkEvery element inspected and packed with an OEM label on request.
Where our filters work
Applications across heavy industry
The same media and end-cap technology is applied from steel mills to swimming pools — the selection differs, the discipline does not.
- Metallurgy & steel mills
- Petrochemical
- Coal mining & hydraulic supports
- Wind power gearboxes
- Power generation
- Machine tools & injection moulding
- Air compressors
- Textile & chemical fibre
- Pharmaceutical & electronics
- Water treatment & RO
- Swimming pools & SPA
- Food & beverage
- Dust collection
- Rail & marine engines
Certified systems
Audited management systems, on file
ISO 9001:2015
Quality management
31324Q300318R0S
ISO 14001:2015
Environmental management
124823E100993R0
ISO 45001:2018
Occupational health & safety
124823S100994R0
Technical insights
Selection notes from our engineers
What a β-ratio of 200 actually means for a hydraulic filter
A filter rated "10 µm" tells you almost nothing. The β-ratio tells you how much of a given particle size is actually…
How to send a competitor part number so it can be quoted the same day
Interchange requests fail for predictable reasons: a truncated part number, a missing micron code, or no indication of the medium. Here is…
Suction strainer or return filter: which one is protecting your pump?
Suction strainers and return-line filters look similar in a catalogue and do completely different jobs. Mixing them up is one of the…
Request a quotation
Tell us the part number and the working conditions
Flow, pressure, filtration rating, media and destination port is enough for a first quotation. Drawings and samples are welcome for OEM projects.
hjxchina@163.com
+86-373-2613188
WhatsApp +86-186-3805-7088
No. 1, Xijichang Industrial Zone, Muye District, Xinxiang City, Henan Province, 453000, China